As it might have been seen from over Hawaii.
And if Venus had no clouds.

The visible moon is Ganymede.

Note the different (improved!) location of Ganymede

On May 28, 1737, John Bevis observed portions of the passage of Venus in
front of Mercury from Greenwitch Observatory.

Here's Celestia's image of that event, as viewed (roughly) from the
location of Greenwitch. A small piece of Mercury is visible past the
lower left edge of Venus.

Since Celestia does not implement light travel time, the time and appearance
of this event is distorted. Mercury is about 1 AU away (8.3 light
minutes) while Venus is only about 1/3 of an AU away (less than 3 light
minutes).

In order to see shadows cast on the planet by the rings, you need
either Celestia v1.2.5 and a GeForce3 or GeForce4 card
with vertex shader support
or
Celestia v1.3.0 or later and a modern graphics card which supports
OpenGL v1.4's "ARB_Vertex" routines.

December 22, 1980
Note the shadow cast by Iapetus onto Saturn within the shadow of
Saturn's rings.
Its shadow should be cast on the rings, too,
but that has not yet been implemented as of Celestia v1.2.5pre7.
First observed by Paul "Calculus." See his screencapture of this event
in his
Gallery of "Celestia Phenomena".

Not needed for Celestia v1.3, this is a replacement for /textures/lores/saturn-rings.png
using appropriate reflective and transparency (alpha-channel) images.
The image maps were obtained from the Web site of
Björn Jónsson:
http://www.mmedia.is/~bjj/data/saturn/rings.html
"A preliminary model of Saturn's rings"

Slight modifications were made to the images so that the major ring
features of the transparency channel are aligned with those of the
reflective image.

Björn informed me that he used data from the Voyager CDs to create his
texture maps, so
I'd also like to acknowledge the Voyager
Experiment Team Leader, Dr. Bradford A. Smith, the Planetary Data System,
and the National Space Science Data Center through World Data center A for
Rockets and Satellites for providing the original data.